cmm

#### Notes on SP600 Upper Level Matrix (Regular Calibration)

The following notes apply to the Upper Level Matrix calibration when you use an analog type probe.

Using OPTIONPROBE Commands with Analog Probe Types

An OPTIONPROBE command is inserted into the measurement routine any time you change values on the Opt. Probe tab in the Parameter Settings dialog box. For information on the Parameter Settings dialog box, see "Parameter Settings: Probe Options tab" in the "Setting Your Preferences" chapter in the PC-DMIS Core documentation.

If PC-DMIS encounters an OPTIONPROBE command in the current measurement routine before the probe's LOADPROBE command, the calibration uses the values from the OPTIONPROBE command. If the OPTIONPROBE command doesn't precede the LOADPROBE command, PC-DMIS uses the default values that are stored in the PC-DMIS Settings Editor application.

For this version of PC-DMIS, you do not need to include the default machine values in an OPTIONPROBE command, because PC-DMIS automatically uses the machine specific defaults if it can't find an OPTIONPROBE command. The default parameters are stored in the ANALOG_PROBING section of the PC-DMIS Settings Editor application.

Using the OPTIONPROBE command may limit the portability of the measurement routine. Since PC-DMIS uses machine-specific data in the OPTIONPROBE command, you may get inaccuracies if you run the measurement routine on a computer using a different CMM. Unless you really need to use the OPTIONPROBE command (such as to measure a really soft part), you generally shouldn't use an OPTIONPROBE command in this version. PC-DMIS can automatically grab the default machine values automatically from the PC-DMIS Settings Editor application.

Changing the Default Calibration Algorithms

The default 3D calibration algorithm for the SP600 has been changed to Trax. The UseTraxWithSP600 registry entry controls this. It is in the Option section.

PC-DMIS, by default, sets this registry entry to 1, which means that Trax will be the default algorithm. You can try the algorithm that works best for your particular situation.

If using Trax calibration for the SP600, the effective tip size generated from the calibration differs from the design value.

If using Trax calibration for non-SP600 analog probes on the Wetzlar machines, the design value of the tip size is used because tip size deviation is handled differently.

If using non-Trax calibration, the design value of the tip size is used.

For information on PC-DMIS Settings Editor, see the PC-DMIS Settings Editor documentation.